Time-piece



(No Model.) I

F. SGHUETZ.

TIME PIECE.

No. 276,892. Patented May 1,1883.

INVENTOR A In? om/vwa.

WITNESSES:

BY w/ mzw ATTORNEYS UNITED STATES PATENT OFFICE.

FRITZ SCHUETZ, OF CARVER, MlNNESOTA.

TIME-PIECE.

SPECIFICATION forming part of Letters'IPatent No. 276,892, dated May 1, 1883.

Application filed February 17, 1883.

To all whom 'it may concern Be it known that I, FRITZ ScnUE'rz, a citizen of the United States, residing at Carver, in the county ofCarver and State ofMinnesota, have invented new and useful Improvements in Time-Pieces, of which the following is a specification.

The object of this invention is to provide means for setting time-pieces to the correctlocal time of any place on the globe simply by setting an additional hand to the place in question, as marked on a secondary dial.

This invention consists in the combination, with the ordinary hands which are in gear with the watch or clock movement and move over the ordinary dial,of an additional hand detached from the watch-movement and arranged over a secondary dial, and of a suitable key or other device for setting all the hands simultaneously to the required time. The secondary dial contains the names of the places, cities, or towns arranged on a spiral line, so that the relative position of the name of a certain place on the spiral indicates the number of times and the direction in which the additional hand must be turned in order to set the time-piece for the correct time of said place.

In the accompanying drawings, Figure 1 represents a central section of a watch containing my improvement. Fig. 2 is a face view of the secondary dial on a larger scale than the previous figure. Fig. 3 is a sectional view of the key which may be used for setting the watch.

Similar letters indicate coresponding parts.

In the drawings, the letter a designates the minute-hand,andbthehour-hand. Thesehands are mounted in the ordinary manner on the spindle c, and they are connected to the watchmovement by gear-wheels, such as usually employed, to cause them to move over the ordinary dial, d, and to indicate the time of day. The spindle 0 extends through the back plate, 1), and it is provided with a square, 0, so that the hands a b can be set to the time required. The inner end of the spindle 0 passes loosely through the hub f of an additional hand,j", said hub being mounted in the back plate, 1), so that the additional hand fdoes not turn with the spindle 0, but can be turned by applying sufficient force to overcome the friction between its hubf and the socket in the back (No model.)

[ plate. For this purpose I use a key, K, Fig.

3, which is provided with a socket, 7a, to fit the square 6 of the spindle c, and with a cone, is, to engage with a correspondiugly-conical socket, g, on the hand f. When the key is made to engage with the square eand depressed into the socket 9, all the hands a, b, andfcan be turned together in any direction.

On the back plate,p, is secured a secondary dial, 1), a detached view of which is shown in Fig. 2. On the face of this dial is marked a spiral line, I, and on this line are a number of dots indicating theplaces, cities, or towns where the watch is to be used. The radial lines on this dial indicate the minutes. It the watch is set to \Vashington time, the additional handfpoints to Washington on the dial D. If the watch is then to be set for Bufialo time, the key K is placed on the spindle c, and the hand f is turned to the right until it points to Butfalo,or to the radial line runningthrough the dot which indicates Buffalo on the dial .1). At the same time the hands a b are turned back for eight minutes, Bufl'alo time being eight minutes later than Vashington time. It the watch is to be set from Washington time to Salt Lake City time, the hand fis turned to the right for two and one-third revolutions until it points to Salt Lake City, (the spiral l indicating without fail the number of times the handf has to be turned around,) and at the same time the hands a b are set back two hours and twenty minutes, Salt Lake City time being two and one-third hours behind Washington time. It the watch is to be set from Washington to the time of a place east of lashington-for instance, to Halifax time-the hand f is turned to the left until itpoints to Halifax on the dial D, and at the same time the hands a b are set fifty-four minutes ahead. From these examples it will be seen that by my additional hand fand secondary dial D, I am enabled to set the watch without further calculation to the time of any place marked on the dial D.

In the example represented by the drawings I have shown a key, K, for setting the watch. It will be readily seen, however, that suitable mechanism may he provided to throw the hand f in and out of gear with the mechanism employed for setting the hands in astem-winder; and, if desired, the secondary dial D may be placed or marked on the face of the time-piece, in which case the spindle a would have to be made hollow to admit an additional spindle for the hand f, and a suitable clutch device will then be required to couple the additional spindle together with the spindle 0 when the timepiece is to be set for a difi'erent local time. In this case the secondary dial would perform the duties of both dials, and the spiral line I must then be reversed.

What i claim as new, and desire to secure by Letters Patent, is

1. The combination, substantially as hereinhefore described, with the ordinary hands, a b, which are in gear with the watch or clock movement and move over the ordinary dial, of an additional hand,f, detached from the watchmovement and arranged over a secondary dial,

and of a suitable key or other device for setting all the hands simultaneously.

2. The dial D, having marked on its face a spiral line, Z, and a series of dots indicating the places, towns, or cities the local time of which is to be ascertained.

3. The dial D, having marked on its face a 25 series of radial lines indicating the minutes, a spiral line, l, and a series of dots indicating the places, towns, or cities the local time of which is to be ascertained.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

FRITZ SOHUETZ. ['L. s]

Witnesses:

W. HAUFF, E. F. KASTENHUBER. 

